闭锁继电器采用了一个电流脉冲进行激励，因此其热电漂移非常小。

Latching relays use a pulse of current to actuate them, so they have very low thermoelectric drift.

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本文提出了一种利用微机软件实现的变压器差动保护电流回路断线闭锁方案。

A blocking scheme for current circuit break in differential protection system of transformers performed by software of micro-computer is proposed in this paper.

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分析了反映序电流、电流突变量和补偿电压的选相原理，提出了当电压互感器断线时为防止误动应闭锁补偿电压选相。

This paper analyzes the phase selection theories of sequence current, the current break variable and the compensation voltage.

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